"Teaching, for the First Time in the History of the World, the True Philosophy upon which all Personal Success is Built."

Lesson XV, Tolerance, will teach you how to avoid the disastrous effects of racial and religious prejudices, which mean defeat for millions of people who permit themselves to become entangled in foolish argument over these subjects, thereby poisoning their own minds and closing the door to reason and investigation. This lesson is the twin sister of the one on Accurate Thought, for the reason that no one may become an Accurate Thinker without practicing tolerance.